ANTHROPOLOGJD^OCIETy" 



OF WASHINGTON.. D. 



C. 



PROCEEDINCrS 



OF THE 



AMERICAIT PHILOSOPHICAL SOCIETY 



HELD AT PHILADELPHIA FOR PROMOTING USEFUL KNOWLEDGE. 



Vol. XXXIII. June, 180 i No. 145. 



TABLE OF CONTENTS. 



Stated Meeiinci, AirniH7r^)y^A^^\HGT0U, 



Stated Meeting, Aprif 

 The Secret of the Brownian Movements. By R. Meade Bache. 

 Obituary Notice of Thomas Mutter Cleeman (with one plate). By 



Frederick Prime 177 



Tiie Dynamics of Boxing. By R. Meade BacJie 179 



Obituary Notice of George de Benneville Keim (with one plate). 



By D. 0. Brinton, M.D 187 



Some New Red Horizons (with three plates). By Benjamin 



Smith Lyman 193 



Remarks on Mr. Lyman's Paper. By Dr. Persifor Frazer 216 



On the Lungs of the Ophidia (with six plates). By Prof. E. D. 



Cope 217 



A Comparative Study of the Chemical Behavior of Pyrite and Mar- 



casite (with two plates). By Amos Peaslee Brown 225 



Notes on the Osteology ot AgriochoerusLeidy (ArtionyxO. and W.). 



By W. B. Scott 213 



Three New Methods for the Detection of Forgery. By Br. 



Persifor Frazer 251 



Stated Meeting, May 4, 1S94 2? 3 



Stated Meeting, May 18, 1S94 256 



^' It is requested that the receipt of this number be acknowledged. 



It^~ In order to secure prompt attention it is requested that all corre- 

 spondence be addressed simply "To the Secretaries of the American 

 Philosophical Society. 104 S. Fifth St., Philadelphia." 



Published for the Society 



BY 



MacCALLA & COMPANY, 



NOS. 237-9 DOCK STREET, PHILADELPHIA. 



